Reasons to Reduce Inflow & Infiltration
I&I Consumes Valuable Sewer Capacity
I&I consumes sewer capacity needed for future growth in the region. It is very expensive to add capacity to existing sewers.
Damage to the Environment
Sewer overflows are damaging to the environment and sensitive ecosystems.
I&I is a Potential Health Hazard
Sewer overflows, whether into private residences and buildings, into parks and streets or into waterways, are potential health hazards.
Regulatory Requirements
British Columbia’s Municipal Sewage Regulation requires that no person allow a sanitary sewer overflow to occur during storm events with less than a 5-year return period (i.e., on average, there shall be no more than one overflow every five years) .